Blade-sharpening machine



Patented y Aug. 3, 1926.

UNITED STATES innen PATENT "o1-Ficsv l' ARTHUR J. FIX, or BUFFALO, nswYORK.

BLADE-SHARBENING MACHINE.

Application filed February 26,1921. Serialy No. 447,969.

and inexpensive construction and few parts;

also to provide improved blade-holding `means for such machines; andalso to provide improvedmeans for alining and setv ting the blades to besharpenedin proper sharpening position. Further obgects are to improvethe construction of razor stropplng and sharpening machines in the otherrespects hereinafter set forth and claimed.

In the drawings l f Fig. l is a side elevation of a machine embodying myinvention, the blade holder being removed.

F ig. 2 is a top plan view thereof.

Fig. 3 is an end elevation thereof.

Fig. a is a fragmentary sectional elevation thereof on an enlargedscale.

Fig. 5 is a cross sectional view of the improved blade holder.

Fig. 6 is an elevation of the blade holder and blade positioning gagefor the holder.

Fig. 7 is a transverse sect-ion of the blade positioning gage. l

Fig. 8 is a sectional elevation showing one of the pair of stropping orsharpening rolls.

Fig. 9 is ay fragmentary transverse section of the blade holder and thetwo stropping or sharpening rolls.

Fig. l() is an elevation of the blade holder.

Fig. 11 is a fragmentary sectional view showing the pivotal connectionbetween the parts of the blade holder.

Fig. l2 is a fragmentary section of another connection between the partsVof the blade holder.

A designates the base of the machine and B and C designate twosharpening r olls which maybe of any desired construction. In thepreferred form illustrated, the rolls are of the typek provided withhelically wound, leatherstrips as D, the strip on one roll,` asillustrated in Fig. 2 of the drawings, entering between the Convolutionsof the strip on the adjacent roll. The rolls B and C are mounted onsuitable shafts E and F and are driven in opposite directions throughmeans of the intermeshing gears G and I-I mounted at the'ends of therespective rolls B and C. One of the shafts E is driven by a drive shaftI driven from a motor or.

other prime mover (not sho-wn). y

The invention includes a blade holder and holder-supporting meanswhereby blades may be held ink sharpening positions between the rolls orout of such positions.` In the preferred embodiment illustrated, l5designates a pair of movable posts slidably mounted to raise and lowerrelatively to the sharpening rolls and adapted to support a blade.

holder 16. Suitable connections may be provided between the posts andthe blade holder, in the preferred form illustrated, the upper end ofeach post being provided with a recess 17 in which anend of the bladeholder is adapted to rest. The invention includes suitable means formoving the holder-supporting posts l5 to and from positions wherein theywill permit the blades in the holder to contact with the rolls forsharpening. In the preferred embodiment these means comprise a rack or`plurality ofk notches 18` provided on the posts l5 adjacent their lowerends, which racks kare engaged by pinions 19 carried by a shaft 2Ojournalled in the base of the machine. 2l desig` nates a handle forturning the shaft 20.

It has been found desirable to normally maintain the blade holder in aposition wherein blades held in the holder will be out of sharpeningcontact with the rolls and to provide means normally for tending tocause the blade holder to assume such position. Vith this purpose invie-w, resilient means have been provided4 for normally urging the bladeholder to` hold the blades in an inoperative or outof sharpeningpositionand the invention also includes means for releasably locking orsecuring the blade-holding device in sharpening positionfV In thepreferred form of the invention ilustrated, 22 designates a springconnected at one end to the base of the machine and at the other end topinion 19 and acting serves when tightened, to prevent turning movementor rocking of the shaft under actuation of spring22 and permits foftheblade-'holding device being relcasably held in bladesharpening`position.

The blade holder isioonstructedto recei've and hold different types ofblades and is provi-'led with readily releasa-ble clamping means for li'mly securing the rblades While they are being sharpeind.l The preferredcmbodiment,ofY the blade holder is 'v comprises aI pairl of clampingmembers andf26 which are provided 'with blade- "gripping flanges orfingers y27 and 28 respectively. f illustrated in ig. p 5these 'clampingAmembers aredprovrded with 1ntern'al recessesas at 29 to receive athiclrl v ene'dyiedge of kcertain types of safety razor blades.lfhefclampingmembers are preferably pivotedtogether byfmeans of aplurality of pins 30, veach pin having an enlarged head 31 'whichv,bears against the onter side of one clampingmeinben 4and irtendingthrough suitable holes in the members andproviding on rthe outer side ofvthe Iother 'clamping member av boss 32. 'l'designates a cam shaft` orrodj journalled in Ybosses 32 and extending substantially lengthwise oftheblade holder andl 34 designate cams or eccentri'cs mounted atinteryalsv on shaft.' The "cam rod 33'has a.-

lever or handle 35 and the other vclamping ti'n'en'iber provided 'with alever or handle fSG extending adjacent handle 35 and the eccentrics R4are so positioned relatively to the handles that when the handles areclosed as'shown in e4`F ig'.f9, the eccentrics 3d will v'bear upontheone clamping member and -orce it towards the other clamping'memvber.4"ltfitollowsf that when'the handles are Apulled apart as illustratedlinf-Figa` 5, the -eccentrics will `be L.moved and allow the clampingmembers to move apart so as to releasei'the'bladesirom the holder. 37designates a pair oile'ai springs interposed between the clampingmemberslfor forcinfr -thosefmembers `apart when ythe handles or 'theblade holder are opened. lSprings 37 may be mounted yin any i suitablemanner, in thefform of the invention' illustrated, one i o'litheclamping@ membersy being recessed vas at=.88,' providing a slot inlwhichthe ends ofij thespringseat and are .prevented from '.turning, 39ydesignates aipin or stud :secured ,to onefo'f the .clamping members.

anda extending' through a. hole .in the yother .y clamping member whentheholderns; as- -isenabled sitioning of the blades in the holder, myinvention Lincludes the. association with the sh arpeniugr machine, of1, a t. gage i, and blade Valiner which automatically cooperates withthe holder when the holder and blades are placed thereon, to properlyposition the blades. Referring to Figsp and 7, 40 desiggnates` the bladegage and aliner which comprisesa blade edge-engaging and alin- `ingsurface 41 which is adapted to engage I n v y y and properlyalme theedges of the blades constructed, as follows: The'` blade. holder ,andVositioninefdevice isconstructed` in the form of v-an open'irame orWboX,the supports `or fleg's '42 beingr provided with .notches #i3 to receivethe ends of the bla-de holder, the A legs 4:2{being 'connected *by*means of a bachi-plate*datand-#bygthef-lat bladeali-ning surface I l1which constitutes the lbottom of the box.

ln' the operation "ofthe machine, vvWhen it -vis desired to place bladesinthe blade holder, lthe handles oll the'vv holder may be pulled apartand the blades 4readilyl inserted betweenl they clamping parts, and at'this time no attention lneed-be paid to ellect any alinement oradjustment of `fthe'wbladesfin the holder. The' blade holder is then'placed inthe gage `and alining @device 40,' the handles f of'lxtheflholder.: being held .slightly out olf closedrpositionatozallow"the'blades to movein the holden-thetendsot the bladeholder resting upon=ther supporting `.legs 42 ofi 'the vThe edges:ofwthe blades whichgare*l to be sharpened `will automat- .ically valineand-level themselves upon the surface el. of the device-.and-theends-ofthe blade. holder beingJin- Contact with the legsxfl2 ofthefaliningdevice, indicate-,and insure that the blades are in proper.l posii tion.for .most efective ',stropping and vsharplening.

The handles arethen closed, the blade holder removed ',:'rom:` the, gage.and

`placed-uponjthe supporting` posts 15, the

nut 123x011 shaftfi20abeing loosenedv sov that fthe-shaft. maybe turned."W-hi-lei-fth'e rolls B and C are bei-ng,-drivenfjtheiA handle21 isturnedk tozlo'wen` theymovable posts 15 and Y permit the .blades-toinlove zinto sharpening contact between the rolls. Whentheblades .chavebeen, properly positionedv` between the rolls,` the nut 23 lg lmay betightened, f where- -upon..the' blades will i be efectually held in:such position vuntil nthek stro,ppii1g or sharpzeningoperationhaszheencompleted. When alt. lis. necessary, lne order.toi securel proper -1 strapping ands-sharpening ofathe ivblades,

posts, with no danger of cutting or scarring the stropping or sharpeningleather of the rolls in such removal.

The machine, by reason of the fact ythat it constantly tends to maintainthe blade holder and blades out of sharpening posiw tion and engagementwith the rolls, permits of very rapid removal of the blade holder andblades from the machine, and thereis no danger of cutting or scarringthe rolls or breaking the blades, and the handle and shaft for movingthe blades to sharpening position against the action of the springpermits of that gradual and restrained feeding movement of the bladestowards the rolls which is so necessary to effectual operation. At thesame time the blades may be most readily7 secured in stropping orsharpening position by simply turning the nut 23 on shaft 20. The gageand alining device prevents any danger of misalinement of the bladeswhen they are placed in the machine and permits of such alinement beingeffected in a very short space of time, inV

fact substantially no longer than is `necessary to rapidly set the bladeholder on the `gage and alining device and remove it from that device.

I claim as my invention l. In a machine for sharpening blades, thecombination with a pair of sharpening rolls, of a blade holder movableto and from a blade-sharpening position between said rolls, movableholder posts for said blade holder, a rock shaft, connections be* tweensaid posts and said roclr shaft, a spring normally urging said posts tomove said holder from blade-sharpeningposition, and releasable means forpreventing movement of said roclr shaft to releasably hold said postswith said blade holder in bladesharpening position.

2. In a machine for sharpening blades, the combination of a pair ofsharpening rolls, a blade holder movable to hold blades in or out ofsharpening positions between said rolls and in contact with both of saidbeing provided with a series of notches, a

rock shaft, and members on said rock shaft engaging the notched ends ofsaid posts,

whereby actuation of said'rock shaft willl move said holder postsendwiseto move said blade holder to and from blade-sharpening position.

3. In a machine for sharpening blades, the combination of a pair ofsharpening rolls, a blade holder movable to hold Lblades in or out ofsharpening positions between said rolls and in contact with both of saidrolls, endwise movable holder posts for said blade holder, a rack on oneend of each post, a rock shaft, pinions on said rock shaft engaging saidracks, whereby actuation of said rock shaft will move said holder postsendwise to move said blade holder to and from blade sharpening position.

fl. In a machine for sharpening razor blades, the combination of a base,a pair of sharpening rolls journalled in said base, a blade holder, apair of holder posts slidably mounted at opposite ends of said rolls,and common means for simultaneously moving said 'posts to move saidblade'holder to and from blade-sharpening positions between said rolls.

5. In a machine for sharpening razor blades, the combination of a base,a pair of sharpening rolls journalled in said base, a blade holder. apair of holder posts slidably mounted at opposite ends of said rolls,common means for simultaneously moving said posts to move said bladeholder to and from bladeesharpening positions between said rolls, andmeans normally maintaining said blade holder out of blade-sharpeningposition.

ARTHUR J. FIX.

lil!

